[racket] Socket and character resp. block device file

On Sun, 5 Jan 2014 14:37:08 -0700
Matthew Flatt <mflatt at cs.utah.edu> wrote:

> At Sun, 5 Jan 2014 21:45:59 +0100, Manfred Lotz wrote:
> > This might be a stupid question. But how do I find out in Racket if
> > a file is a socket or a haracter resp. block device file.
> 
> I don't think any functions currently provide that information. (The
> only related function that comes to mind is `terminal-port?`, and even
> that function works on ports instead of files.)
> 

Oh, that's really bad. 

When testing my file duplicate finder one of my test cases is to create
a socket, a pipe, a character device and a block device file. My racket
program gets a
   system error: No such device or address; errno=6
when dealing with a socket. Or if it is a pipe then it waits for input.

I think functionality should be added in Racket. 

What's about something like this?
 socket-exists
 pipe-exists
 block-device-exists
 character-device-exists


-- 
Manfred



-- 
Manfred